That is pretty good Benn. Much better than my first go.
I started with a tent made out of aluminium sheets from a dumped caravan and a bed made out of insulating cork from a refridgeration unit.
The tent was fine until it fell on me. My fault for having an argument with the wild life in it one night.
You said you have some buckets of bricks...
May I suggest you scrape a square of soil absolutely clear of roots and lay a square of bricks on it for the bottom of your fire?
If you make a back wall out of them, too, they wont dry out and catch fire.
Having a fire that close to the other trees in the summer could well be a problem as even a stray spark can burn the place down. I suggest you sort out a hobo or a woodgas stove by then, or even better, an alchohol stove so you dont give off smoke.
When you are chopping up the branches that were hacked down, have a look for any nice straight pieces and also a couple of Y shaped pieces that you can use to support your tarp. That way you can leave your frame and take your tarp so the ones who are dumping the rubbish dont take it. If you intend to continue with the iron sheets, may I suggest you build a two sided thing so one side can rest on the other, making it a lot more stable.
If you hack your firewood into 6 inch lengths and store it under a piece of tarp, but up off the ground, it will stay drying until you need it. You might need to hide it so you arnt burgled.
Looking at that stream... I would have liked one of them in my camp.
However, that water looks a bit yuck. If I was you, I would look at possibly scraping out the muck and finding out what it is and where it came from. It could be run off from the road drains and this area is being used as a soakaway. If so, flooding may be a problem. If it is a natural spring, a small dam might give you a nice big puddle to wash in.
If you want to drink it, you would have to ask someone here who knows what they are talking about as I wouldnt know how to tell if it was polluted. If it isnt, a propper water filter bag and some treatment with the propper tablets might work...But ask on here for someone who actually knows, dont rely on my word on that.
There are some trees that will start to grow if you stick snapped off twigs back in the ground. I dont know which ones are which, but someone else may be able to advise you how to start your screens growing...
Have you found the tarps that you wanted?
Have you thought of making hammocks out of it too?
Would love to have a semi permanent start like that for me...I mean my kids!
Good luck with it and keep asking.